GraphicsMagick *and* ImageMagick fail to compile

[Dewayne Geraghty]

I can echo Kevin's experience.
Successfully built on 10.3-STABLE FreeBSD 10.3-STABLE #0 r303088M: Thu Jul
21, using ccache on both i386 and amd64.
-rw-r--r--  1 root  wheel   6.8M Jul 23 01:34
ImageMagick-nox11-6.9.4.3,1.txz

#  cd /usr/ports/graphics/ImageMagick-nox11 && make showconfig | grep =off
     DJVU=off: DJVU format support (needs THREADS)
     GRAPHVIZ=off: Graphviz graph drawing support
     GSLIB=off: libgs (Postscript SHLIB) support
     HDRI=off: High dynamic range images support
     OPENEXR=off: HDR image format support via OpenEXR
     OPENMP=off: Parallel processing support via OpenMP
     TESTS=off: Run bundled self-tests after build